Methylamine, CH3-NH₂, is a weak base (pk = 3.36). Which of the following acids is sufficiently strong to protonate methylamine to an extent greater than 50% at 25 C? (pk for each acid is given) CH₂CH₂-OH (-> CH3CH2-O HIO (10.70) H₂O (15.7) H₂S (7.04) ) (15.9) Reminder: pk + pk = 14.00 (25°C) a Select one: O A. H₂S only OB. HIO and H₂S O C. H₂O only O D. H₂S and H₂O OE. HIO only
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
In first question, we are given that:
Methylamine (CH3NH2) is a weak base with pKb=3.36
pKa value for some acids is given as follows:
HIO=10.70
H2O=15.7
H2S=7.04
CH3CH2OH=15.9
To identify: The acid which can protonate methylamine to an extent greater than 50%
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